[Purpose] This study investigated the influence of the indoor horseback riding exercise
on the electromyographic activity of the lower extremity and balance during one-leg
standing. [Subjects] Twenty normal adults were divided into an indoor horseback riding
exercise group (IHREG, n=10), which performed the indoor horseback riding exercise using
equipment 3 times a week for 3 weeks, and a control group (CG, n=10), which performed no
exercise. [Methods] For comparitive analysis, an electromyographic test was performed to
measure the electromyographic activities of the rectus femoris (RF), adductor longus (AL),
and gluteus medius and the Biodex Balance System was used to measure the anteroposterior
stability index (APSI), mediolateral stability index, and overall stability index (OSI).
[Results] The electromyographic activities of RF and AL significantly increased and the
balance abilities of APSI and OSI decreased significantly in the IHREG compared to the CG.
[Conclusion] We consider indoor horseback riding exercise is an effective intervention for
increasing electromyographic activities of the RF and AL, and the balance abilities of
APSI and OSI of normal adults.